Goodman Furnace Error Codes

Your Goodman or Amana furnace tried to light across its ignition trials, never proved flame, and locked out. Most boards then retry automatically after about an hour.

The furnace lit but the flame-sensing rod read too little current, so the board dropped the gas valve to stay safe. A classic Goodman fault as the sensor oxidizes.

The inducer ran but the board never saw the pressure switch close, so it will not allow ignition — a draft/venting safety interlock.

The board saw the pressure switch already closed before the inducer started, which it treats as a fault and refuses to fire.

The high-limit opened because the heat exchanger got too hot — almost always an airflow problem, and a fault you should not ignore.

A safety-critical fault: flame rolled out of the burner box instead of drawing into the heat exchanger. The furnace locks out hard and must be manually reset by a technician after diagnosis.

The board senses flame when the gas valve should be closed — a serious gas-control fault that locks the furnace out.

The furnace cannot run the inducer or the main blower correctly, so it shuts down — both are essential for safe operation.